n-date-picker

name	n-date-picker
description	A comprehensive date picker component supporting various date types (date, datetime, range, month, year, quarter, week) with formatting, validation, shortcuts, and async operations
author	jiaiyan
version	1.0.0

n-date-picker Component

The n-date-picker component is a comprehensive date selection component that supports multiple date types including date, datetime, date range, month, year, quarter, and week. It offers extensive customization for formatting, validation, shortcuts, and panel behavior.

When to Use

Use n-date-picker when you need to:

• Collect date or datetime input from users
• Select date ranges for filtering or scheduling
• Choose months, years, quarters, or weeks
• Format dates in specific patterns
• Disable specific dates or time ranges
• Provide quick selection shortcuts
• Integrate with forms for date validation

Basic Usage

Date Picker

<template>
  <n-date-picker v-model:value="timestamp" type="date" />
</template>

<script setup>
import { ref } from 'vue';

const timestamp = ref(null);
</script>

DateTime Picker

<template>
  <n-date-picker v-model:value="timestamp" type="datetime" clearable />
</template>

Date Range Picker

<template>
  <n-date-picker v-model:value="range" type="daterange" clearable />
</template>

<script setup>
import { ref } from 'vue';

const range = ref([null, null]);
</script>

Different Sizes

<template>
  <n-space vertical>
    <n-date-picker v-model:value="timestamp" size="small" type="date" />
    <n-date-picker v-model:value="timestamp" size="medium" type="date" />
    <n-date-picker v-model:value="timestamp" size="large" type="date" />
  </n-space>
</template>

API Reference

General Props

Name	Type	Default	Description
value / v-model:value	number | [number, number] | null	undefined	Value as timestamp (ms).
clearable	boolean	false	Whether the picker is clearable.
default-value	number | [number, number] | null	undefined	Default value.
disabled	boolean	false	Whether the picker is disabled.
first-day-of-week	0 | 1 | 2 | 3 | 4 | 5 | 6	undefined	First day of week (0 = Monday).
input-readonly	boolean	false	Set readonly on input.
panel	boolean	false	Use as panel only (no input).
placement	'top-start' | 'top' | ...	'bottom-start'	Panel placement.
placeholder	string	Type-specific	Placeholder text.
shortcuts	Record<string, number | (() => number)>	undefined	Shortcut buttons.
show	boolean	undefined	Whether to show panel.
size	'small' | 'medium' | 'large'	'medium'	Picker size.
status	'success' | 'warning' | 'error'	undefined	Validation status.
to	string | HTMLElement | false	body	Panel container.
type	'date' | 'datetime' | 'daterange' | ...	'date'	Picker type.
value-format	string	Follows format	Format of binding value.
format	string	Type-specific	Display format.

Date Type Props

Name	Type	Default	Description
actions	Array<'clear' | 'now'> | null	['clear', 'now']	Panel actions.
is-date-disabled	(current, detail) => boolean	() => false	Date validator.
fast-year-select	boolean	false	Close panel after year select.
fast-month-select	boolean	false	Close panel after month select.

DateTime Type Props

Name	Type	Default	Description
actions	Array<'clear' | 'now' | 'confirm'> | null	['clear', 'now', 'confirm']	Panel actions.
default-time	string | (timestamp) => string	undefined	Default time for selected date.
is-time-disabled	(current) => {...}	undefined	Time validator.
time-picker-props	TimePickerProps	undefined	Time picker props.
update-value-on-close	boolean	false	Update value on panel close.

DateRange Type Props

Name	Type	Default	Description
actions	Array<'clear' | 'confirm'> | null	['clear', 'confirm']	Panel actions.
bind-calendar-months	boolean	false	Consecutive calendar months.
start-placeholder	string	'Start Date'	Start placeholder.
end-placeholder	string	'End Date'	End placeholder.
separator	string	internal icon	Range separator.
close-on-select	boolean	false	Close after selection.
update-value-on-close	boolean	false	Update on close.

Events

Name	Parameters	Description
update:value	(value, formattedValue)	Triggered when value changes.
update:formatted-value	(value, timestampValue)	Triggered for formatted value.
update:show	(show: boolean)	Triggered when panel shows/hides.
blur	()	Triggered on blur.
focus	()	Triggered on focus.
clear	()	Triggered on clear.
confirm	(value, formattedValue)	Triggered on confirm.
prev-month	()	Triggered on previous month click.
next-month	()	Triggered on next month click.
prev-year	()	Triggered on previous year click.
next-year	()	Triggered on next year click.

Slots

Name	Parameters	Description
date-icon	()	Date icon in input.
footer	()	Extra footer content.
separator	()	Separator for range picker.
prev-month	()	Previous month icon.
next-month	()	Next month icon.
prev-year	()	Previous year icon.
next-year	()	Next year icon.
clear	{ onClear, text }	Clear button.
confirm	{ onConfirm, disabled, text }	Confirm button.
now	{ onNow, text }	Now button.

Methods

Name	Type	Description
focus	() => void	Focus the picker.
blur	() => void	Blur the picker.

Common Patterns

Formatted Value Binding

<template>
  <n-date-picker
    v-model:formatted-value="formattedValue"
    value-format="yyyy-MM-dd HH:mm:ss"
    type="datetime"
    clearable
  />
</template>

<script setup>
import { ref } from 'vue';

const formattedValue = ref(null);
</script>

Date Range with Shortcuts

<template>
  <n-date-picker
    v-model:value="range"
    type="daterange"
    :shortcuts="shortcuts"
  />
</template>

<script setup>
import { ref } from 'vue';

const range = ref(null);

const shortcuts = {
  Today: () => {
    const now = Date.now();
    return [now, now];
  },
  'Last 7 Days': () => {
    const now = Date.now();
    return [now - 7 * 86400000, now];
  },
  'Last 30 Days': () => {
    const now = Date.now();
    return [now - 30 * 86400000, now];
  },
};
</script>

Disabled Specific Dates

<template>
  <n-space vertical>
    <n-date-picker type="date" :is-date-disabled="isDateDisabled" />
    <n-date-picker type="daterange" :is-date-disabled="isRangeDateDisabled" />
  </n-space>
</template>

<script setup>
const isDateDisabled = ts => {
  const date = new Date(ts);
  return date.getDate() <= 15;
};

const isRangeDateDisabled = (ts, phase, value) => {
  if (!value) return false;
  const [start] = value;
  if (phase === 'end' && start) {
    return ts < start + 7 * 86400000;
  }
  return false;
};
</script>

Default Time for DateTime

<template>
  <n-space vertical>
    <n-date-picker type="datetime" default-time="13:22:11" clearable />
    <n-date-picker
      type="datetimerange"
      :default-time="['09:00:00', '18:00:00']"
      clearable
    />
  </n-space>
</template>

Custom Actions

<template>
  <n-space vertical>
    <n-date-picker v-model:value="ts1" type="date" :actions="['now']" />
    <n-date-picker v-model:value="ts2" type="datetime" :actions="['now']" />
    <n-date-picker
      v-model:value="range"
      type="daterange"
      :actions="null"
      update-value-on-close
    />
  </n-space>
</template>

Panel Only Mode

<template>
  <n-date-picker panel type="date" v-model:value="value" />
</template>

Custom Format

<template>
  <n-date-picker
    v-model:value="timestamp"
    type="datetime"
    format="yyyy/MM/dd HH:mm"
    clearable
  />
</template>

Month, Year, Quarter, Week Pickers

<template>
  <n-space vertical>
    <n-date-picker v-model:value="month" type="month" clearable />
    <n-date-picker v-model:value="year" type="year" clearable />
    <n-date-picker v-model:value="quarter" type="quarter" clearable />
    <n-date-picker v-model:value="week" type="week" clearable />
  </n-space>
</template>

Using Methods via Ref

<template>
  <n-space item-style="display: flex; align-item: center;">
    <n-button @click="handleClick">Focus then blur in 1 second</n-button>
    <n-date-picker ref="datePickerRef" style="width: 200px" />
  </n-space>
</template>

<script setup>
import { ref } from 'vue';

const datePickerRef = ref(null);

const handleClick = () => {
  datePickerRef.value?.focus();
  setTimeout(() => {
    datePickerRef.value?.blur();
  }, 1000);
};
</script>

Custom Icons

<template>
  <n-date-picker type="date">
    <template #date-icon>
      <n-icon :size="16" :component="RocketOutline" />
    </template>
  </n-date-picker>
</template>

<script setup>
import { RocketOutline } from '@vicons/ionicons5';
</script>

Best Practices

1. Use timestamps for value binding: The component uses millisecond timestamps for consistent date handling.

2. Use formatted-value for string values: When you need string values (e.g., for API), use v-model:formatted-value with value-format.

3. Implement shortcuts for common selections: Provide shortcuts for frequently used date ranges to improve UX.

4. Use is-date-disabled for validation: Disable invalid dates proactively rather than showing errors after selection.

5. Set update-value-on-close for range pickers: This prevents intermediate updates during range selection.

6. Use panel mode for embedded calendars: When embedding in custom UI, use panel mode without the input field.

7. Configure first-day-of-week for locale: Set appropriately for your target audience (0 = Monday, 6 = Sunday).

8. Use default-time for consistent datetime selection: Set default times to ensure consistent datetime values.

9. Leverage fast-year-select and fast-month-select: Enable these for quicker date selection in forms.